Sample, Representative 



A sample taken that is typical of or that represents a fair 

 value of the area or population from which it is taken. 



Sand Binder 



A plant that holds sand from being blown away. 



Sapling 



A tree that is more than three feet in height and less 

 than 4 inches in diameter at breast height. 



Saprobe 



An organism that lives on dead organisms or on decaying 

 organic material. 



Saprophyte 



A plant that obtains food from dead or decaying organic 

 material, cf. Parasite, Heterophyte. 



Sopwood 



The outermost part of the wood or xylem of the trunks 

 of trees, generally lighter in color than the heartwood, con- 

 tains living cells, active in translocation of water and mineral 

 nutrients. 



Saturation Deficit 



The difference between the pressure of water vapor in the 

 atmosphere at a given time and the maximum that it could 

 contain at the same temperature, expressed in millimeters 

 of mercury; or sometimes expressed as the difference between 

 the relative humidity and the humidity at saturation. 



Saturation Point 



The density of a given population above which it no 

 longer increases. 



Saurian 



Refers to a lizard. 



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